.product_details {
  background-color: #fff;
}
.banner {
  width: 100%;
  height: 250px;
  position: relative;
}
.banner img {
  width: 100%;
  height: 100%;
}
.banner .btn {
  background: url(../img/return_1.png) no-repeat;
  width: 24px;
  height: 24px;
  background-size: 100% 100%;
  position: absolute;
  top: 20px;
  left: 10px;
}
.list_1 .centent {
  width: 95%;
  margin: 0 auto;
  background-color: #fff;
  padding: 15px 0;
  box-sizing: border-box;
}
.list_1 .centent h4 {
  font-size: 14px;
  width: 100%;
}
.list_1 .centent p {
  font-weight: bold;
  font-size: 12px;
  line-height: 2;
  color: #444;
  margin-top: 5px;
}
.list_2 {
  padding-bottom: 50px;
}
.list_2 .centent {
  width: 100%;
}
.list_2 .centent .top {
  width: 100%;
  box-sizing: border-box;
  background: url(../img/title.png) no-repeat;
  background-size: 100% 100%;
  height: 50px;
  display: flex;
  align-items: center;
  padding-left: 3%;
  border-radius: 10px 10px 0 0;
}
.list_2 .centent .top h6 {
  font-size: 16px;
  font-weight: bold;
  color: #0F4D12;
}
.list_2 .centent p {
  padding: 0 3%;
  box-sizing: border-box;
}
.buttom {
  width: 100%;
  height: 50px;
  position: fixed;
  bottom: 0;
  background-color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}
.buttom .btn {
  width: 90%;
  height: 40px;
  background-color: #0F4D12;
  border-radius: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
